1366 - Incorrect integer value: '' for column `mapshopatlogis`.`whos_online`.`customer_id` at row 1

insert into whos_online (customer_id, full_name, session_id, ip_address, time_entry, time_last_click, last_page_url) values ('', 'Guest', '86820bc9e268ede7765ccfb00e41d9fc', '54.221.110.87', '1711676803', '1711676803', '/index.php/language/de/cat/c30_Countries.html/page/1')

[XT SQL Error]